BLITZ Dual Drive Blow Off

Flange suits R31-R35

fits all RB20 / 25 / 26 and VG38 engines

The GTR´s need 2 bovs

Great working order.

From the Blitz site
The main purpose of the dump valves is to improve the response of the turbo by quickly releasing the boost pressure before the turbo stalls.

They are made from polished aluminium with a brass piston and a rubber diaphragm, meaning they can easily cope with boost pressures up to 1.2 bar with the supplied spring.

There is an alternative hard spring for boost pressures above 1.2bar and also a soft spring available for very low boost applications.

Blitz dump valves also feature "Dual Drive" for maximum response, a small port for low boost and a larger port for high boost.

They are also tension adjustable.